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When extreme accuracy and greater surface hardness are required (as in duplicator models)
Works well in both woodfiring and reduction
We highly recommend testing for glaze and underglaze fit
and becomes almost black at cone 10
266 Umbria Size:500lb Moist at 1.02/lb When extreme accuracy and greaterC 4 5 Gives a reduction like dark brown color in an electric kiln. Smooth and plastic. Good for all techniques. Contains manganese. We recommend a cone 5 firing for this clay. Cone 4 Average Shrinkage 11. 5% Absorption 2. 4% Cone 5 Average Shrinkage 12. 5% Absorption 1. 0% Product Number: 10266 *Image of clay is fired to cone 5*
